<template>
  <div class="outer">
    <!-- 三级分类导航 -->
    <TypeNav />
    <div class="main">
      <div class="py-container">
        <!--面包屑导航-->
        <div class="bread">
          <ul class="fl sui-breadcrumb">
            <li>
              <span href="#">全部结果</span>
            </li>
          </ul>
          <ul class="fl sui-tag">
            <!-- 搜索条件的展示 -->
            <li class="with-x" v-if="$route.query.categoryName">
              {{ $route.query.categoryName }}
              <span class="iconfont icon-close" @click="delCategory"></span>
            </li>
            <li class="with-x" v-if="$route.query.keyword">
              {{ $route.query.keyword }}
              <span class="iconfont icon-close" @click="delKeyword"></span>
            </li>
            <li class="with-x" v-if="searchOptions.trademark">
              {{ searchOptions.trademark.split(":")[1] }}
              <span class="iconfont icon-close" @click="delTrademark"></span>
            </li>
            <li
              class="with-x"
              v-for="(prop, index) in searchOptions.props"
              :key="index"
            >
              {{ `${prop.split(":")[2]}:${prop.split(":")[1]}` }}
              <span class="iconfont icon-close" @click="delProp(index)"></span>
            </li>
          </ul>
        </div>

        <!-- 搜索器 -->
        <SearchSelector
          :trademarkList="trademarkList"
          :attrsList="attrsList"
          @searchTrademark="searchTrademark"
          @searchProps="searchProps"
        />

        <!--商品展示区-->
        <div class="details clearfix">
          <!-- 列表操作区 -->
          <div class="sui-navbar">
            <div class="navbar-inner filter">
              <ul class="sui-nav">
                <li
                  @click="setOrder('1')"
                  :class="{ active: order.orderName === '1' }"
                >
                  <a>
                    综合
                    <span
                      :class="[
                        'iconfont',
                        `icon-${
                          order.orderType === 'desc' ? 'falling' : 'rising'
                        }`,
                      ]"
                      v-show="order.orderName === '1'"
                    >
                    </span>
                  </a>
                </li>
                <li>
                  <a>销量</a>
                </li>
                <li>
                  <a>新品</a>
                </li>
                <li>
                  <a>评价</a>
                </li>
                <li
                  @click="setOrder('2')"
                  :class="{ active: order.orderName === '2' }"
                >
                  <a>
                    价格
                    <span
                      :class="[
                        'iconfont',
                        `icon-${
                          order.orderType === 'desc' ? 'falling' : 'rising'
                        }`,
                      ]"
                      v-show="order.orderName === '2'"
                    >
                    </span>
                  </a>
                </li>
              </ul>
            </div>
          </div>
          <!-- 商品列表 -->
          <div class="goods-list">
            <ul class="yui3-g">
              <li class="yui3-u-1-5" v-for="goods in goodsList" :key="goods.id">
                <div class="list-wrap">
                  <div class="p-img">
                    <router-link :to="{
                      name:'detail',
                      params:{
                        id:goods.id
                      }
                    }"><img :src="goods.defaultImg" class="goodImg" /></router-link>
                  </div>
                  <div class="price">
                    <strong>
                      <em>¥</em>
                      <i>{{ goods.price }}</i>
                    </strong>
                  </div>
                  <div class="attr">
                    <a>{{ goods.title }}</a>
                  </div>
                  <div class="commit">
                    <i class="command">已有<span>2000</span>人评价</i>
                  </div>
                </div>
              </li>
            </ul>
          </div>
          <!-- 分页器 -->
          <div class="page">
            <!--  
              current-page 当前页码
              page-sizes  每页条数的选项
              page-size 每页条数
              total 总条数
              @size-change 当page-size改变触发
              @current-change 当current-page改变触发
              layout 组件布局
             -->
            <!-- <el-pagination
              @size-change="handleSizeChange"
              @current-change="handleCurrentChange"
              :current-page="searchOptions.pageNo"
              :page-sizes="[5, 10, 15, 20]"
              :page-size="searchOptions.pageSize"
              layout="total, sizes, prev, pager, next"
              :total="total"
              background
            >
            </el-pagination> -->

            <Pagination
              :total="total"
              :current-page="searchOptions.pageNo"
              :page-size="searchOptions.pageSize"
              :page-sizes="[5, 10, 15, 20]"
              @current-change="handleCurrentChange"
              @size-change="handleSizeChange"
            ></Pagination>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import debounce from 'lodash/debounce';
import SearchSelector from "./SearchSelector";
import { reqSearchGoodsList } from "@/api/search";
import Pagination from "@/components/Pagination";
export default {
  name: "XSearch",
  data() {
    return {
      // 品牌列表
      trademarkList: [],
      // 属性列表
      attrsList: [],
      // 商品列表
      goodsList: [],
      // 保存搜索条件，参数配置对象
      searchOptions: {
        // 分类和关键字可以在路径中获取
        // 三级分类
        // category1Id: "",
        // category2Id: "",
        // category3Id: "",
        // categoryName: "",
        // 关键字
        // keyword: "",
        // 商品属性 ["属性ID:属性值:属性名"]
        props: [],
        // 品牌 "ID:品牌名称"
        trademark: "",
        // 排序方式
        // 排序类型(type)   1: 综合     2: 价格
        // 排序标识(flag)  asc: 升序  desc: 降序
        order: "1:desc",
        pageNo: 1,
        pageSize: 5,
      },
      // 总条数
      total: 0,
    };
  },
  components: {
    SearchSelector,
    Pagination,
  },
  methods: {
    // 因为多处要发送请求，封装一个函数
    async searchGoodsList() {
      const res = await reqSearchGoodsList({
        ...this.searchOptions, // 品牌 商品属性 排序方式 分页
        ...this.$route.query, // 分类 关键字
      });
      this.trademarkList = res.trademarkList;
      this.attrsList = res.attrsList;
      this.goodsList = res.goodsList;
      this.total = res.total;
    },
    // 搜索品牌
    searchTrademark(trademark) {
      // 拿到品牌数据修改参数配置对象再去发送请求
      this.searchOptions.trademark = trademark;
      this.searchGoodsList();
    },
    // 搜索属性
    searchProps(prop) {
      // 如果数据在之前数据中，不需要再次添加
      if (this.searchOptions.props.includes(prop)) return;
      // 拿到属性数据修改参数配置对象再去发送请求
      this.searchOptions.props.push(prop);
      this.searchGoodsList();
    },

    /*
      排序搜索：
        需求1 ： 点击切换orderName 并高亮
          点击综合 值为1
          点击价格 值为2
        需求2 ： 点击如果和上次的相同 切换orderType  如果不同 默认降序
        需求3 ： 默认不显示icon 点击才显示      
        需求4 ： 排序优化   
      搜索条件的显示和删除   
    */

    // 排序搜索
    setOrder(orderName) {
      // 先修改条件再发请求
      let orderType = "desc";
      // 判断点击是否和上次的相同
      const { orderName: oldOrderName, orderType: oldOrderType } = this.order;
      if (oldOrderName === orderName) {
        orderType = oldOrderType === "desc" ? "asc" : "desc";
      }
      // 如果不同 默认降序
      this.searchOptions.order = `${orderName}:${orderType}`;
      this.searchGoodsList();
    },
    // 删除分类名称
    delCategory() {
      const keyword = this.$route.query.keyword;
      const option = {
        name: "search",
      };
      // 如果有keyword 只带keyword去重新跳转
      if (keyword) {
        option.query = {
          keyword,
        };
      }
      this.$router.history.push(option);
    },
    // 删除关键字
    delKeyword() {
      const keyword = this.$route.query.keyword;
      const query = this.$route.query;
      const option = {
        name: "search",
        query: {
          ...query,
        },
      };
      // 如果有keyword 删除keyword 再去跳转
      if (keyword) {
        delete option.query.keyword;
      }
      this.$router.push(option);
    },
    // 删除delTrademark
    delTrademark() {
      // 修改数据再发请求
      this.searchOptions.trademark = "";
      this.searchGoodsList();
    },
    // 删除属性
    delProp(index) {
      // 根据下标删除 修改数据再发请求
      this.searchOptions.props.splice(index, 1);
      this.searchGoodsList();
    },
    // 分页
    // 点击每页n条 显示每页n条数据
    handleSizeChange(pageSize) {
      this.searchOptions.pageSize = pageSize;
      this.searchGoodsList();
    },
    // 使用防抖对用户不停切换页码的场景优化
    // 点击第n页 显示第n页数据
    handleCurrentChange : debounce(function(currentPage) {
      this.searchOptions.pageNo = currentPage;
      this.searchGoodsList();
    },500),
  },
  computed: {
    order() {
      const [orderName, orderType] = this.searchOptions.order.split(":");
      return {
        orderName,
        orderType,
      };
    },
  },
  mounted() {
    this.searchGoodsList(); // 一挂载渲染就发一次请求
  },
  watch: {
    $route() {
      this.searchGoodsList(); // 监听$route的变化，做的是携带分类和关键字搜索
    },
  },
};
</script>

<style lang="less" scoped>
.main {
  margin: 10px 0;

  .py-container {
    width: 1200px;
    margin: 0 auto;

    .bread {
      margin-bottom: 5px;
      overflow: hidden;

      .sui-breadcrumb {
        padding: 3px 15px;
        margin: 0;
        font-weight: 400;
        border-radius: 3px;
        float: left;

        li {
          display: inline-block;
          line-height: 18px;

          a {
            color: #666;
            text-decoration: none;

            &:hover {
              color: #4cb9fc;
            }
          }
        }
      }

      .sui-tag {
        margin-top: -5px;
        list-style: none;
        font-size: 0;
        line-height: 0;
        padding: 5px 0 0;
        margin-bottom: 18px;
        float: left;

        .with-x {
          font-size: 12px;
          margin: 0 5px 5px 0;
          display: inline-block;
          overflow: hidden;
          color: #000;
          background: #f7f7f7;
          padding: 0 7px;
          height: 20px;
          line-height: 20px;
          border: 1px solid #dedede;
          white-space: nowrap;
          transition: color 400ms;
          cursor: pointer;

          i {
            margin-left: 10px;
            cursor: pointer;
            font: 400 14px tahoma;
            display: inline-block;
            height: 100%;
            vertical-align: middle;
          }

          &:hover {
            color: #28a3ef;
          }
        }
      }
    }

    .details {
      margin-bottom: 5px;

      .sui-navbar {
        overflow: visible;
        margin-bottom: 0;

        .filter {
          min-height: 40px;
          padding-right: 20px;
          background: #fbfbfb;
          border: 1px solid #e2e2e2;
          padding-left: 0;
          border-radius: 0;
          box-shadow: 0 1px 4px rgba(0, 0, 0, 0.065);

          .sui-nav {
            position: relative;
            left: 0;
            display: block;
            float: left;
            margin: 0 10px 0 0;

            li {
              float: left;
              line-height: 18px;

              a {
                display: block;
                cursor: pointer;
                padding: 11px 15px;
                color: #777;
                text-decoration: none;
              }

              &.active {
                a {
                  background: #e1251b;
                  color: #fff;
                }
              }
            }
          }
        }
      }

      .goods-list {
        margin: 20px 0;

        ul {
          display: flex;
          flex-wrap: wrap;

          li {
            height: 100%;
            width: 20%;
            margin-top: 10px;
            line-height: 28px;

            .list-wrap {
              .p-img {
                padding-left: 15px;
                width: 215px;
                height: 255px;

                a {
                  color: #666;
                }
              }

              .price {
                padding-left: 15px;
                font-size: 18px;
                color: #c81623;

                strong {
                  font-weight: 700;

                  i {
                    margin-left: -5px;
                  }
                }
              }

              .attr {
                padding-left: 15px;
                width: 85%;
                overflow: hidden;
                margin-bottom: 8px;
                min-height: 38px;
                cursor: pointer;
                line-height: 1.8;
                display: -webkit-box;
                -webkit-box-orient: vertical;
                -webkit-line-clamp: 2;

                a {
                  color: #333;
                  text-decoration: none;
                }
              }

              .commit {
                padding-left: 15px;
                height: 22px;
                font-size: 13px;
                color: #a7a7a7;

                span {
                  font-weight: 700;
                  color: #646fb0;
                }
              }

              .operate {
                padding: 12px 15px;

                .sui-btn {
                  display: inline-block;
                  padding: 2px 14px;
                  box-sizing: border-box;
                  margin-bottom: 0;
                  font-size: 12px;
                  line-height: 18px;
                  text-align: center;
                  vertical-align: middle;
                  cursor: pointer;
                  border-radius: 0;
                  background-color: transparent;
                  margin-right: 15px;
                }

                .btn-bordered {
                  min-width: 85px;
                  background-color: transparent;
                  border: 1px solid #8c8c8c;
                  color: #8c8c8c;

                  &:hover {
                    border: 1px solid #666;
                    color: #fff !important;
                    background-color: #666;
                    text-decoration: none;
                  }
                }

                .btn-danger {
                  border: 1px solid #e1251b;
                  color: #e1251b;

                  &:hover {
                    border: 1px solid #e1251b;
                    background-color: #e1251b;
                    color: white !important;
                    text-decoration: none;
                  }
                }
              }
            }
          }
        }
      }

      .page {
        display: flex;
        justify-content: center;
      }
    }
  }
}
.goodImg {
  width: 100%;
  height: 100%;
}
</style>

<!-- 
  这里搜索关键字自己写的bug 把输入框中的属性定义为keywords 不可以
  后端参数是keyword！！！

  1.静态组件
  2.动态渲染
  3.封装发送请求接口函数
  4.分类和关键字搜索
  5.搜索品牌

 -->
